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WW1
The data files for WW1 have never been compatible with WW2. That was pretty much the whole point of the update. Which figures are you not seeing supported by WW2 that were supported by WW1?

Hi Phil,
well, they are supported, but I see no upgrade option. For WW1 I had the V4 addon, and  
Ingenue Vickie 3 support. For WW2 I only see those figures by purchasing at full price the V4 package again, plus Expansion Pack 6. It would be great to have those integrated in the P8 WW.

I see an upgrade option WW1 => WW2, but not for the figure packs.

Best regards,
   Michael

P.S.: Almost forgot to mention: It is great to have WW integrated in Poser 8. For non-WW-owners, this could be one major reason to upgrade to P8, as WW alone is worth half of the upgrade price ;-)